Continuous variable quantum teleportation with non-Gaussian resources
| Autor: | Dell'Anno, F., De Siena, S., Farias, L. Albano, Illuminati, F. |
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| Rok vydání: | 2007 |
| Předmět: | |
| Zdroj: | Phys. Rev. A 76, 022301 (2007) |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1103/PhysRevA.76.022301 |
| Popis: | We investigate continuous variable quantum teleportation using non-Gaussian states of the radiation field as entangled resources. We compare the performance of different classes of degaussified resources, including two-mode photon-added and two-mode photon-subtracted squeezed states. We then introduce a class of two-mode squeezed Bell-like states with one-parameter dependence for optimization. These states interpolate between and include as subcases different classes of degaussified resources. We show that optimized squeezed Bell-like resources yield a remarkable improvement in the fidelity of teleportation both for coherent and nonclassical input states. The investigation reveals that the optimal non-Gaussian resources for continuous variable teleportation are those that most closely realize the simultaneous maximization of the content of entanglement, the degree of affinity with the two-mode squeezed vacuum and the, suitably measured, amount of non-Gaussianity. Comment: 12 pages, 12 figures |
| Databáze: | arXiv |
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